(19)
(11) EP 0 319 904 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.11.1989 Bulletin 1989/47

(43) Date of publication A2:
14.06.1989 Bulletin 1989/24

(21) Application number: 88120342.6

(22) Date of filing: 06.12.1988
(51) International Patent Classification (IPC)4: G03B 27/20
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 10.12.1987 US 131377

(71) Applicant: Ohlig, Ernest
Newport Beach, CA 92660 (US)

(72) Inventor:
  • Ohlig, Ernest
    Newport Beach, CA 92660 (US)

(74) Representative: Liesegang, Roland, Dr.-Ing. et al
FORRESTER & BOEHMERT Franz-Joseph-Strasse 38
80801 München
80801 München (DE)


(56) References cited: : 
   
       


    (54) Graphic material registration apparatus and method


    (57) Improved method and apparatus for supporting photo­graphic sheet materials (9,11) in intimate surface contact during contact exposure includes a flexible membrane (15) which forms a common boundary wall between two gas-tight chambers (19,20). Air at ambient pressure is admitted to one chamber (20) at a controlled rate slower than air is evacuated from the other chamber (19) containing the photo­graphic sheet materials (9,11). Progressive expansion of the surface area of contacting force assures that residual volumes of air between photographic sheets are squeezed out in an orderly pattern and not trapped in isolated pockets that distort resulting photographic images.







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